JP5274214B2 - Cancer cell suppression sheet - Google Patents

Cancer cell suppression sheet Download PDF

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JP5274214B2
JP5274214B2 JP2008298942A JP2008298942A JP5274214B2 JP 5274214 B2 JP5274214 B2 JP 5274214B2 JP 2008298942 A JP2008298942 A JP 2008298942A JP 2008298942 A JP2008298942 A JP 2008298942A JP 5274214 B2 JP5274214 B2 JP 5274214B2
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cancer cell
cellulose
phosphate porous
tricalcium phosphate
sheet
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JP2010126434A (en
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錦雁 程
康治 袴塚
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Olympus Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To simply inhibit the metastasis and recurrence of cancer cells without producing side effects. <P>SOLUTION: This cancer cell inhibitor 1 contains tricalcium &beta;-phosphate porous powder. The tricalcium &beta;-phosphate porous powder also has an effect to inhibit the proliferation, metastasis and recurrence of cancer cells similarly to cisplatin. Since the tricalcium &beta;-phosphate porous powder is formed from only a material having high biocompatibility, the tricalcium &beta;-phosphate porous powder can inhibit the cancer cells without producing side effects, and can reduce loads on patients. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、癌細胞抑制シートに関するものである。 The present invention relates to a cancer cell suppression sheet .

従来、癌細胞の転移や再発を防止するために、シスプラチン等の抗癌剤を投与したり放射線治療したりすることが行われている(特許文献1参照。)。   Conventionally, in order to prevent metastasis and recurrence of cancer cells, an anticancer agent such as cisplatin has been administered or subjected to radiotherapy (see Patent Document 1).

特開平6−90750号公報JP-A-6-90750

しかしながら、シスプラチン等の抗癌剤は副作用があり、また放射線治療は装置が大がかりであるという不都合がある。
本発明は、上述した事情に鑑みてなされたものであって、簡易にかつ副作用なく癌細胞の転移や再発を抑制することができる癌細胞抑制シートを提供することを目的としている。
However, anticancer drugs such as cisplatin have side effects, and radiation therapy has the disadvantage that the apparatus is large.
The present invention was made in view of the above circumstances, and its object is to provide a cancer cell suppressor sheet that can be inhibited metastasis and recurrence of side effects without cancer cells and easily.

上記目的を達成するために本発明は以下の手段を提供する。
本発明は参考例として、βリン酸三カルシウム多孔体粉末を含む癌細胞抑制剤を提供する。
発明者らは、研究の結果、βリン酸三カルシウム多孔体粉末を癌細胞に付着させると、体内に異物が存在するときに反応する貪食細胞であるマクロファージの活動を活発化させ、これによってT細胞のような免疫細胞を癌細胞または癌細胞を切除した後の患部に集めることができることを見いだした。その結果、βリン酸三カルシウム多孔体粉末も、シスプラチンと同様に、癌細胞の増殖、転移や再発を抑制する効果があることがわかった。βリン酸三カルシウム多孔体は生体親和性の高い材料のみによって構成されているので、副作用もなく癌細胞を抑制することができ、患者にかかる負担を軽減することができる。
In order to achieve the above object, the present invention provides the following means.
As a reference example, the present invention provides a cancer cell inhibitor containing β-tricalcium phosphate porous powder.
As a result of research, the inventors of the present invention, when β-tricalcium phosphate porous powder is attached to cancer cells, activates macrophage, which is a phagocytic cell that reacts when a foreign substance is present in the body. It has been found that immune cells such as cells can be collected in cancer cells or in affected areas after excision of cancer cells. As a result, it was found that β-tricalcium phosphate porous powder also has the effect of suppressing the growth, metastasis and recurrence of cancer cells, like cisplatin. Since the β-tricalcium phosphate porous body is composed only of a material having high biocompatibility, cancer cells can be suppressed without side effects, and the burden on the patient can be reduced.

上記発明においては、βリン酸三カルシウム多孔体が、25〜75μmの粒径を有することが好ましい。
粒径25μmより小さいβリン酸三カルシウム多孔体粉末の場合には、初期的には粒径25〜75μmの場合と同様の効果が認められたが、粒子どうしが凝集して大きな粒径となってしまいマクロファージの活動が活発化され難く、時間の経過とともに癌細胞の抑制効果が低くなる。また、粒径75〜106μmの場合には、粒径25〜75μmの場合よりも10〜20%低い抑制効果が認められた。さらに大きな粒径の場合には、βリン酸三カルシウム多孔体の気孔内に細胞が入り込んでマクロファージの活動が活発化され難い。これらの結果から粒径25〜75μmの場合に特に癌細胞を効果的に抑制することができる。
In the said invention, it is preferable that (beta) tricalcium phosphate porous body has a particle size of 25-75 micrometers.
In the case of β tricalcium phosphate porous powder having a particle size of less than 25 μm, the same effect as in the case of a particle size of 25 to 75 μm was initially observed, but the particles aggregated to a large particle size. As a result, the activity of macrophages is difficult to be activated, and the suppressive effect of cancer cells decreases with time. Moreover, in the case of a particle size of 75-106 micrometers, the inhibitory effect 10-20% lower than the case of a particle size of 25-75 micrometers was recognized. In the case of a larger particle size, cells enter the pores of the β-tricalcium phosphate porous body, and the activity of macrophages is difficult to be activated. From these results, cancer cells can be effectively suppressed particularly when the particle diameter is 25 to 75 μm.

また、上記発明においては、βリン酸三カルシウム多孔体が、気孔率75%以上の気孔率を有することが好ましい。
このようにすることで、βリン酸三カルシウム多孔体の成分が患部に溶出されやすく、マクロファージの活動を活発化させることができる。
In the above invention, the β-tricalcium phosphate porous body preferably has a porosity of 75% or more.
By doing in this way, the component of the β tricalcium phosphate porous body is easily eluted to the affected part, and the activity of macrophages can be activated.

また、本発明は、柔軟性のあるシート部材の表面に粒径25〜75μmのβリン酸三カルシウム多孔体粉末をコーティングしてなる癌細胞抑制シートを提供する。
本発明によれば、癌細胞または癌細胞を切除した後の患部にβリン酸三カルシウム多孔体粉末のコーティングを宛うように配置することで、マクロファージがβリン酸三カルシウム多孔体に活動に集まり、免疫細胞を癌細胞または癌細胞を切除した後の患部に集めて、癌細胞の増殖、転移や再発を抑制することができる。
Moreover, this invention provides the cancer cell suppression sheet | seat formed by coating the surface of the flexible sheet | seat member with (beta) tricalcium phosphate porous powder with a particle size of 25-75 micrometers.
According to the present invention, macrophages are active in a β-tricalcium phosphate porous body by arranging the cancer cell or the affected area after excision of the cancer cell so that the coating of β-tricalcium phosphate porous powder is addressed. Collecting and collecting immune cells in cancer cells or the affected area after excision of cancer cells can suppress the proliferation, metastasis and recurrence of cancer cells.

上記発明においては、前記βリン酸三カルシウム多孔体が、75%以上の気孔率を有することが好ましい。
このようにすることで、βリン酸三カルシウム多孔体の成分が患部に溶出されやすく、マクロファージの活動を活発化させることができる。
In the said invention, it is preferable that the said beta tricalcium phosphate porous body has a porosity of 75% or more.
By doing in this way, the component of the β tricalcium phosphate porous body is easily eluted to the affected part, and the activity of macrophages can be activated.

また、上記発明においては、前記シート部材は、前記βリン酸三カルシウム多孔体粉末のコーティング領域の周囲の領域に粘着性材料がコーティングされていてもよい。
このようにすることで、βリン酸三カルシウム多孔体のコーティング領域を患部に宛った状態で、その周囲にコーティングされた粘着性材料を患部の周囲に粘着させてシート部材を固定することができる。これにより、βリン酸三カルシウム多孔体が患部に宛われた状態を簡易に維持することができる。
In the above invention, the sheet member may be coated with an adhesive material in a region around the coating region of the β tricalcium phosphate porous powder.
In this way, the sheet material can be fixed by adhering the adhesive material coated around the affected area to the affected area with the coating region of the β tricalcium phosphate porous body directed to the affected area. it can. Thereby, the state in which the β tricalcium phosphate porous body is addressed to the affected part can be easily maintained.

また、上記発明においては、前記シート部材が、弾性材料により構成されていてもよい。
このようにすることで、シート部材に設けられた粘着性材料が患部の周囲に粘着させられる際に、シート部材が弾性変形させられるので、その弾性力によってβリン酸三カルシウム多孔体粉末が患部に押し付けられる。これにより、患部に存在するマクロファージがさらに刺激されて、活動が活発化させられる。
Moreover, in the said invention, the said sheet | seat member may be comprised with the elastic material.
By doing in this way, when the adhesive material provided in the sheet member is adhered to the periphery of the affected part, the sheet member is elastically deformed, so that β tricalcium phosphate porous powder is affected by the elastic force. Pressed against. As a result, the macrophages present in the affected area are further stimulated to activate the activity.

また、上記発明においては、前記シート部材が、セルロース系高分子により構成されていてもよい。
また、上記発明においては、前記シート部材が、メチルセルロース、エチルセルロース、メチルヒドロキシプロピルセルロース、ヒドロキシエチルセルロース、セルロール硫酸ナトリウム、カルボキシメチルセルロースナトリウム結晶セルロース、セルロース末を含んでいてもよい。
また、上記発明においては、前記シート部材が、ポリ乳酸により構成されていてもよい。
Moreover, in the said invention, the said sheet | seat member may be comprised with the cellulose polymer.
Moreover, in the said invention, the said sheet | seat member may contain methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate, carboxymethylcellulose sodium crystalline cellulose, and a cellulose powder.
Moreover, in the said invention, the said sheet | seat member may be comprised with polylactic acid.

本発明によれば、簡易にかつ副作用なく癌細胞の転移や再発を抑制することができるという効果を奏する。   According to the present invention, there is an effect that cancer cell metastasis and recurrence can be suppressed easily and without side effects.

以下、本発明の一実施形態に係る癌細胞抑制剤1および癌細胞抑制シート2について、図面を参照して以下に説明する。
本実施形態に係る癌細胞抑制剤1は、気孔率75%の粒径25〜75μmのβリン酸三カルシウム多孔体粉末により構成されている。
Hereinafter, a cancer cell inhibitor 1 and a cancer cell inhibitor sheet 2 according to an embodiment of the present invention will be described with reference to the drawings.
The cancer cell inhibitor 1 according to this embodiment is composed of a β-tricalcium phosphate porous powder having a porosity of 75% and a particle size of 25 to 75 μm.

また、本実施形態に係る癌細胞抑制シート2は、図1に示されるように、一面に粘着性材料3をコーティングしてなるシート部材4と、該シート部材4の粘着性材料3側の表面中央部に所定の領域にわたってコーティングされた上記癌細胞抑制剤1とを備えている。   In addition, as shown in FIG. 1, the cancer cell suppression sheet 2 according to this embodiment includes a sheet member 4 formed by coating an adhesive material 3 on one surface, and the surface of the sheet member 4 on the adhesive material 3 side. The cancer cell inhibitor 1 coated at a central portion over a predetermined region is provided.

シート部材4は、セルロース系の高分子によって構成されている。セルロース系の高分子としては、ヒアルロン酸にカルボキシメチルセルロースを加えたもの(例えば、セプラフィルム:科研製薬社製)や、メチルセルロース、エチルセルロース、メチルヒドロキシプロピルセルロース、ヒドロキシエチルセルロース、セルロール硫酸ナトリウム、カルボキシメチルセルロースナトリウム結晶セルロース、セルロース末を含むものを挙げることができる。   The sheet member 4 is made of a cellulosic polymer. Cellulose polymers include hyaluronic acid and carboxymethylcellulose (eg Sepra film: manufactured by Kaken Pharmaceutical Co., Ltd.), methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate, carboxymethylcellulose sodium crystals The thing containing a cellulose and a cellulose powder can be mentioned.

このように構成された本実施形態に係る癌細胞抑制剤1および癌細胞抑制シート2の作用について説明する。
本実施形態に係る癌細胞抑制剤1を癌細胞に付着させると、癌細胞の周囲の組織に存在していて、異物が存在するときに反応する貪食細胞であるマクロファージの活動が活発化させられる。そして、マクロファージが活性化されると、T細胞のような免疫細胞が、癌細胞に集められ、癌細胞の増殖、転移や再発が抑制される。
The effect | action of the cancer cell inhibitor 1 and the cancer cell suppression sheet | seat 2 which concern on this embodiment comprised in this way is demonstrated.
When the cancer cell inhibitor 1 according to this embodiment is attached to a cancer cell, the activity of macrophages that are phagocytic cells that are present in tissues surrounding the cancer cell and react when a foreign substance is present is activated. . When the macrophages are activated, immune cells such as T cells are collected in the cancer cells, and the proliferation, metastasis, and recurrence of the cancer cells are suppressed.

シスプラチンのような抗癌剤とは異なり、βリン酸三カルシウム多孔体は生体親和性の高い材料のみによって構成されているので、副作用もなく癌細胞を抑制することができ、患者にかかる負担を軽減することができるという利点がある。   Unlike anticancer drugs such as cisplatin, β-tricalcium phosphate porous body is composed only of highly biocompatible materials, so it can suppress cancer cells without side effects and reduce the burden on patients. There is an advantage that you can.

本実施形態に係る癌細胞抑制シート2によれば、癌細胞にβリン酸三カルシウム多孔体粉末からなる癌細胞抑制剤1のコーティングを宛うように配置して癌細胞抑制剤1の周囲の粘着性材料3を周囲の組織に粘着させることにより、癌細胞抑制剤1を癌細胞に宛った状態に容易に固定しておくことができる。また、シート部材4をセルロース系の高分子材料によって構成することで、粘着させられる際に、シート部材4が弾性変形させられるので、その弾性力によって癌細胞抑制剤1を癌細胞に押し付けることができる。これにより、周囲の組織に存在するマクロファージがさらに刺激されて、活動が活発化させられて、癌細胞の抑制効果を高めることができる。   According to the cancer cell suppression sheet 2 according to the present embodiment, the cancer cell inhibitor 1 is disposed so that the coating of the cancer cell inhibitor 1 made of β-tricalcium phosphate porous powder is addressed to the cancer cells. By adhering the adhesive material 3 to the surrounding tissue, the cancer cell inhibitor 1 can be easily fixed in a state addressed to the cancer cells. Moreover, since the sheet member 4 is elastically deformed when the sheet member 4 is made of cellulose-based polymer material to be adhered, the cancer cell inhibitor 1 can be pressed against the cancer cells by the elastic force. it can. Thereby, the macrophage which exists in the surrounding tissue is further stimulated, the activity is activated, and the inhibitory effect of cancer cells can be enhanced.

図2に、本実施形態に係る癌細胞抑制剤1による大腸癌細胞の抑制効果を表すグラフを示す。
図2は、大腸癌細胞の表面に本実施形態に係る癌細胞抑制剤1を付着させてからの経過日数と大腸癌細胞の体積増加率との関係を示している。図2においては、癌細胞抑制剤1を付着させた時点での体積を100%としたときの数値を示している。
In FIG. 2, the graph showing the inhibitory effect of the colon cancer cell by the cancer cell inhibitor 1 which concerns on this embodiment is shown.
FIG. 2 shows the relationship between the number of days elapsed since the cancer cell inhibitor 1 according to this embodiment was attached to the surface of the colon cancer cells and the volume increase rate of the colon cancer cells. In FIG. 2, the numerical value when the volume at the time of attaching the cancer cell inhibitor 1 is 100% is shown.

図2において、パラメータControlは、何ら処置を施さない場合、パラメータTCPは本実施形態に係る癌細胞抑制剤1を付着させた場合、パラメータCisplatinは、抗癌剤であるシスプラチンを付着させた場合をそれぞれ示している。
これによれば、何ら処置を施さない場合、大腸癌細胞は、43日間で20000%を超える体積増加率を示したのに対し、本実施形態に係る癌細胞抑制剤1は、抗癌剤を付着させた場合と同様に、6000%程度の体積増加率にとどまった。
In FIG. 2, the parameter Control indicates the case where no treatment is performed, the parameter TCP indicates the case where the cancer cell inhibitor 1 according to the present embodiment is attached, and the parameter Cisplatin indicates the case where the anticancer agent cisplatin is attached. ing.
According to this, when no treatment was performed, the colorectal cancer cells showed a volume increase rate exceeding 20000% in 43 days, whereas the cancer cell inhibitor 1 according to the present embodiment adhered the anticancer agent. As with the case, the volume increase rate was only about 6000%.

すなわち、本実施形態に係る癌細胞抑制剤1によれば、抗癌剤であるシスプラチンと同様に癌細胞を抑制する効果があり、しかも、生体親和性の高い材料のみによって構成されているので、シスプラチンを塗布した場合のような副作用がなく、患者にかかる負担を軽減することができるという利点がある。   That is, according to the cancer cell inhibitor 1 according to the present embodiment, it has an effect of suppressing cancer cells in the same manner as cisplatin, which is an anticancer agent, and is composed only of a material having high biocompatibility. There are no side effects as in the case of application, and there is an advantage that the burden on the patient can be reduced.

なお、本実施形態においては、癌細胞抑制剤1を構成するβリン酸三カルシウム多孔体粉末の粒径を25〜75μmに設定した。この粒径範囲のものが効果的に癌細胞を抑制することが確認されたが、この粒径範囲以外の粒径のβリン酸三カルシウム多孔体粉末も癌細胞抑制効果がある。例えば、粒径25μmより小さいβリン酸三カルシウム多孔体粉末は、初期的には粒径25〜75μmの場合と同様の細胞抑制効果が認められたが時間の経過とともに抑制効果が低下した。一方、粒径75〜106μmの場合には、粒径25〜75μmの場合の10〜20%程度低い癌細胞抑制効果が認められた。   In the present embodiment, the particle diameter of the β tricalcium phosphate porous powder constituting the cancer cell inhibitor 1 is set to 25 to 75 μm. Although it was confirmed that those in this particle size range effectively suppress cancer cells, β-tricalcium phosphate porous powder having a particle size outside this particle size range also has a cancer cell inhibitory effect. For example, the β tricalcium phosphate porous powder having a particle size of less than 25 μm initially exhibited the same cell inhibitory effect as that of the particle size of 25 to 75 μm, but the inhibitory effect decreased with the passage of time. On the other hand, in the case of a particle size of 75 to 106 μm, a cancer cell inhibitory effect which is about 10 to 20% lower than that in the case of a particle size of 25 to 75 μm was observed.

また、シート部材4としてセルロース系の高分子材料からなるものを例示したが、これに限定されるものではなく、ポリ乳酸等の他の任意の生体親和性を有する材料からなるシート部材4を採用することにしてもよい。
また、シート部材4の表面に粘着性材料3をコーティングすることとしたが、これに代えて、粘着性材料3をコーティングしていない癌細胞抑制シートを採用してもよい。この場合、包帯や他の粘着シート等によって固定することにすればよい。
Moreover, although the thing which consists of a cellulose-type polymeric material was illustrated as the sheet member 4, it is not limited to this, The sheet member 4 which consists of other arbitrary biocompatible materials, such as polylactic acid, is employ | adopted You may decide to do it.
Moreover, although the adhesive material 3 was coated on the surface of the sheet member 4, it may replace with this and the cancer cell suppression sheet | seat which is not coating the adhesive material 3 may be employ | adopted. In this case, it may be fixed with a bandage or other adhesive sheet.

本発明の一実施形態に係る癌細胞抑制剤および癌細胞抑制シートを示す斜視図である。It is a perspective view which shows the cancer cell inhibitor and cancer cell suppression sheet which concern on one Embodiment of this invention. 本実施形態に係る癌細胞抑制剤の癌細胞抑制効果のグラフを示す図である。It is a figure which shows the graph of the cancer cell inhibitory effect of the cancer cell inhibitor which concerns on this embodiment.

符号の説明Explanation of symbols

1 癌細胞抑制剤
2 癌細胞抑制シート
3 粘着性材料
4 シート部材
DESCRIPTION OF SYMBOLS 1 Cancer cell inhibitor 2 Cancer cell suppression sheet 3 Adhesive material 4 Sheet member

Claims (7)

柔軟性のあるシート部材の表面に粒径25〜75μmのβリン酸三カルシウム多孔体粉末をコーティングしてなる癌細胞抑制シート。   A cancer cell-suppressing sheet obtained by coating the surface of a flexible sheet member with a β-tricalcium phosphate porous powder having a particle size of 25 to 75 μm. 前記βリン酸三カルシウム多孔体が、75%以上の気孔率を有する請求項に記載の癌細胞抑制シート。 The cancer cell suppression sheet according to claim 1 , wherein the β-tricalcium phosphate porous body has a porosity of 75% or more. 前記シート部材は、前記βリン酸三カルシウム多孔体粉末のコーティング領域の周囲の領域に粘着性材料がコーティングされている請求項または請求項に記載の癌細胞抑制シート。 The cancer cell suppression sheet according to claim 1 or 2 , wherein the sheet member is coated with an adhesive material in a region around the coating region of the β-tricalcium phosphate porous powder. 前記シート部材が、弾性材料により構成されている請求項に記載の癌細胞抑制シート。 The cancer cell suppression sheet according to claim 3 , wherein the sheet member is made of an elastic material. 前記シート部材が、セルロース系高分子により構成されている請求項に記載の癌細胞抑制シート。 The cancer cell suppression sheet according to claim 4 , wherein the sheet member is composed of a cellulose-based polymer. 前記シート部材が、メチルセルロース、エチルセルロース、メチルヒドロキシプロピルセルロース、ヒドロキシエチルセルロース、セルロール硫酸ナトリウム、カルボキシメチルセルロースナトリウム結晶セルロース、セルロース末を含む請求項に記載の癌細胞抑制シート。 The cancer cell suppression sheet according to claim 5 , wherein the sheet member contains methyl cellulose, ethyl cellulose, methyl hydroxypropyl cellulose, hydroxyethyl cellulose, sodium cellulose sulfate, sodium carboxymethyl cellulose crystalline cellulose, and cellulose powder. 前記シート部材が、ポリ乳酸により構成されている請求項に記載の癌細胞抑制シート。 The cancer cell suppression sheet according to claim 4 , wherein the sheet member is composed of polylactic acid.
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