Abstract：
:Natural killer (NK) cells are key members of innate immunity against tumor and infection. Killer cell immunoglobulin-like receptor (KIR) genes regulates NK cell function, which varies substantially between individuals in the number and type. Specific KIRs are associated with certain diseases. Herein we investigated if KIR genes are associated with thyroid cancer risk. Eighty-five patients with thyroid cancer were characterized for the presence and absence of 11 variable KIR genes using a gene-specific PCR typing system, and compared with our recently published healthy control data. Overall, a trend toward more activating KIR receptors was observed in thyroid cancer patients compared to the healthy controls. Particularly, the activating KIR2DS5 gene was significantly increased in patients compared to the controls. Additionally, three other genes (3DS1-2DL5-2DS1) that are strongly linked to KIR2DS5 at the telomeric region of the KIR gene complex [called Telomeric 4 (T4) gene cluster] were also more predominant in the thyroid cancer patient group than in healthy controls. A similar trend of having more of the T4 gene cluster was also reported in a previous study with cervical neoplasia. Together, these data suggest that specific activating KIR genes in cancer patients could generate a chronic inflammatory condition resulting in a tumor microenvironment that may favor tumor growth.
journal_name
Hum Immunoljournal_title
Human immunologyauthors
Ashouri E,Dabbaghmanesh MH,Rowhanirad S,Bakhshayeshkaram M,Ranjbar Omrani G,Ghaderi Adoi
10.1016/j.humimm.2012.07.325subject
Has Abstractpub_date
2012-10-01 00:00:00pages
1017-22issue
10eissn
0198-8859issn
1879-1166pii
S0198-8859(12)00490-9journal_volume
73pub_type
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