Human antibody κ type light chain complex-containing composition and method for producing same

1. A method of treating a cancer comprising administering a human antibody κ type light chain complex-containing composition to a patient in an amount sufficient to cause cytotoxicity to cancer cells, the composition comprising:

a complex in which a human antibody κ type light chain is bound to one or more kinds of metal ions selected from the group consisting of Group 10 elements, Group 11 elements, and Group 12 elements,

wherein the human antibody κ type light chain is a dimer, cysteines at C terminals of two human antibody κ type light chains are bound to each other through the metal ion, and the human antibody κ type light chain is selected from the group consisting of:

(1) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 1;

(2) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 3;

(3) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 5;

(4) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 7;

(5) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 9;

(6) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 11;

(7) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 13;

(8) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 15;

(9) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 17;

(10) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 19;

(11) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO.21;

(12) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 23;

(13) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 25;

(14) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 27;

(15) a polypeptide which is represented by the amino acid sequence in which cysteine at position 219 in an amino acid sequence of SEQ ID NO. 2 is substituted with alanine;

(16) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 29;

(17) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 31;

(18) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 33;

(19) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 35;

(20) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 37;

(21) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 39;

(22) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 41;

(23) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 43;

(24) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 45;

(25) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 47;

(26) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 49; and

(27) a polypeptide in which a variable region is represented by the amino acid sequence of SEQ ID NO. 51; and

wherein 0.1 mol or more of the metal ion is bound per 1 mol of the human antibody κ type light chain; and

the cancer cells are selected from the group consisting of: lung cancer cells, stomach cancer cells, leukemia cells, cancerous T-cells and pancreatic cancer cells.

2. The method of treating a cancer according to claim 1 ,

wherein the metal ion is one or more selected from the group consisting of copper ion, nickel ion, zinc ion, gold ion, silver ion, and platinum ion.

3. The method of treating a cancer according to claim 1 , wherein the cancer to be treated is selected from the group consisting of: lung cancer, stomach cancer, leukemia, and pancreatic cancer.