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© Institut Pasteur
Phlébotome. Petit diptère de la famille des psychodidés (dans l'Ancien Monde). La femelle hématophage peut être vectrice entre autres de leishmaniose qu'elle transmet par piqûre à un vertébré, chien (hôte principal réservoir), homme ou encore rat (hôtes occasionnels).
Publication : Cancer genetics and cytogenetics

Cytogenetic studies of a human medullary thyroid carcinoma cell line.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Cancer genetics and cytogenetics - 01 Mar 1987

Tanaka K, Baylin SB, Nelkin BD, Testa JR,

Link to Pubmed [PMID] – 3467830

Cancer Genet Cytogenet 1987 Mar; 25(1): 27-35

Detailed karyotypic analyses were performed on early and late passages of the TT cell line derived from malignant cells of a patient with the sporadic form of medullary thyroid carcinoma. Most of the cells examined were hypodiploid with a modal chromosome number of 43. The cells have a complex karyotype with ten rearranged chromosomes found in early passages and 12 rearranged chromosomes in late passages. The karyotypic pattern was relatively stable with continued in vitro culture, and consistent alterations involved chromosomes X, #1, #3, #5, #7, #8, #9, #10, #11, #12, and #14. Rearrangements of chromosome #11 are of particular interest, because the gene for calcitonin, the polypeptide hormone marker for medullary thyroid carcinoma resides on this chromosome. In early passages, one #11 contained an insertion within band q13, and this abnormality was retained in late passages. In late passage cells the other #11 homolog developed a deletion of part of the short arm, which involves the calcitonin gene region. We were unable to detect any deletion of chromosome band 20p12, previously reported by other investigators to occur in the germ line of patients with the hereditary form of medullary thyroid carcinoma.

https://pubmed.ncbi.nlm.nih.gov/3467830